Fluid-tight expansion-joint.



C. E. HEITMAN. FLUID TIGHT EXPANSION JOINT.

APPLIOATION FILED JAN. 19, 1910.

1,015,180. Patented Jan.16,1912.

WITNESSES: IIVVENTOR 67/40/ 5 ZasZbzzf/fiiimw V ATTORNEYS will beperfectly fluid tight, and which will an escape past the str p.

so ing drawings, forming a part of this specias a portion of a conduitand tube sheet in con- 4o somewhat modified arrangement of packing ,ll NlTED STATES PATENT OFFICE.

CHAR-LES EASTO'N HEITMAN, OF NEW YORK, N. Y., ASSIGN'OR T 0 HERMANLANGE,

OF DORCHESTER, MASSACHUSETTS.

\ FLUID-TIGHT EXPANSION-JOINT.

llMldJSU. Specification ofLetters Patent- Patented 16, 1912.

Application filed January 19, 1910. SerialINo. 538,826.

To all whom it may concern: except to the Smokestack, and that such Beit known that I, CHARLES EAs'roN gases and smoke be 'prevented from inany HnirMAN, a citizen of the United States, way-gaining access to theinterior "of the and a resident of the city of New York, tubes.

a borough of Manhattan, in'the county and My improved joint serves toconnectt-he State of New York, have invented a new end of the tube orpipe to theend'wall'of and Improved Fluid-Tight Expansionthe casing,that is, the tube sheet or crown Joint, of which the following is afull, clear, sheet, so as to positively prevent any escape and exactdesc iption. v of gas through said wall orsheetfromihe m Thi i v ntionrelates to certain improveinterior of the chamber through which the 66ments in joints for connecting pipes or co-ntubes pass. It is, ofcourse, evident that duits to walls, partitions, or tube sheets, myimproved joint may be used in various and the object of the invention isto form other types of apparatus in which tubes a very simple andefficient joint which and supporting Walls are employed, and I thereforedo not Wish to be limited'to any 70 particular application of theinvention.

My invention may assume various differ ent forms, but in the formillustrated in Flg. 1, I employ a tube 10, which'servesas an air tube ina heater of the character sabove referred to. This tube adjacent itsend, extends through the wall 11 andis sufficiently loose therein, so asto permit the tube to move lengthwise a limiteddista'nce during theexpansion and'the contraction of the tube when the latter is heated andcooled. The outer end .of the tube is exteriorly threaded, and a collar12 interiorly threaded is fitted into the end of the tube lOoutside ofthe wall 11. An annular sheet metal expansion ring, band or strip 13,has one edge thereof fitting the outer peripheral surface of the collar12, and is permanently secured thereto by a second collar 14, which isheated and shrunk onto the collar 12, to grip the edge of the band 13therebetween. The sheet metal forming the expansion ring, band or strip13, extends outardly from the wall 11 and is folded back upon itself toform an outer portion 15 surrounding the collar 1 1 and concentrictherewith. The free edge of this outer portion 15 is bent outwardly, soas to form an outer flange 16 lying in a plane parallel to the outersurface of the wall 11, and is firmly secured to the latter. An asbestospacking 17 may be inserted between the flange 16 and the wall 11, andbolts 18 may have their heads countersunk on the inner surface of thewall 11 and may extend out through the asbestos packing and the flange16, to re ceive nuts 19 serving to bind the flange in position. By thisconstruction, gas is positively prevented from escaping from between theflange 16 and the wall, and the permit of a relative movement of thetube or conduit, and the wall or plate. Instead of using a cap about thetube,,which not only impedes the free movement of the lata ter, butwhich often becomes disposed or deranged, so as to leak,-I employ anannularstrip of sheet material, the opposite edges of the strip being sosecured to the tube and plate that no liquid or gas can possibly Theinvention inuolves the important features of construction hereinafterreferred to, and particularly defined inthe claims.

Reference is'to be had to the accompanyfication, in which similarcharacters of reference indicate corresponding parts in all the figures,and in which 1 Figure 1 is a longitudinal section through nect-ion withwhich a packing constructed in accordance with my invention is employed;Figs. 2 and 3 are sectional details similar to a portion of Fig. 1, butshowing a strips. My invention is particularly: adaptable for use inconnection with that type of heater in which a large bank of pipes or 45tubes are supported with their ends attached to walls or tube sheets, sothat when a fire is built below the tubes, the gases of combustion maypass up through the casing around the tubes to the chimney, while airmay to pass either' by natural or forced drafts through the tubes and tothe space to be heated or dried by the heated air. It is particularlydesirable that the smoke and gases of combustion surrounding the tubes55 be prevented from passing out of the casing is threaded to the tubegas escaping through the opening in the wall 11 around the tube 0,cannot pass the expansion ring. As the 'tubeexpan'ds or contracts, thefold of the sheet metal upon itself" 12, and as the'collar pansion ring.15

metal during the expansion or contraction of the tube, as I, may relysimply upon a folding. In the form shown in Fig. 2, the

hat as the tube is expanded or y v be folded at an angle rather thanbeing rolled. Inthis case, 1 the fold of'the metal also serves toconceal the. collar 12, and it may in fact be brought closelyadjacentthe collar, so as to completely conceal the latter, as well asconceal the end of the tube 10."

' fold or bend of the metal extends mwardly from the other part 15,

but I may, if desired, extend the-bent pore expansion c ring 13* has aband or fold 20, extend mg outwardradially this case, ther'eis an 40 v inot of tis only. essential lace ; lar, a second collar shrunk uponsaid-edge to do not rely upon a rolling of the sheet d partially asindicated in Fig-3.v In

an opening,

a ring of of said colhold the latter to said the other edge of saidring. being b edge, said tube sheet and said packing, for securing thering and packing in position.

he combination with a tube and a tube sheet, of a fluid-tight expansionoint,

between, one of said collars being detachably secured. to said tube,means for securing the other edge of said sheet metal to said tubesheet. 1

3. The combination with a tube sheet and a tube movable longitudinallytherethrough, of a fiuid-tight expansion expansion ring 't'ermediateconnecting portion, means for I y e of the inner one of portions to theperiphery of the tube to form a. fluid-ti ht joint, and means forrigidly securing t is edge of the outer one of said cylindrical portionsto the surface of the tube sheet-to form a'fluid-ti'ght joint, t e innerand outer portions 'of'said ring 'eing relatively movable upon anexpansion or contraction of the tube.

' he combination of a tube sheet having a tube extending loosely hsaidopening, a packing ring engagsheet and concentric to said tube,sheet metal provided with a flan e engaging said'packin ring, saidmetallic ring being provided with another portion bent bac upon itself,and a collar mounted upon said-tube and engaging said portion thus bentback upon itself.v v

In testimony whereof I have signed my name to this specification in thepresence of ing Witnesses.

throng two subscrib 4. CHARLES 'EASTON HEITMAN. Witnesses. CLAIRFAIRBANK, PHILIP D. ROLLHAUS.

